Trihalomethanes on ECD

Chromatography Forum: GC Archives: Trihalomethanes on ECD
Top of pagePrevious messageNext messageBottom of pageLink to this message  By ihasegan on Friday, September 7, 2001 - 12:05 am:

I want measure the chloroform in the range of 1-5 ppb with ECD. I work on a VARIAN 3800 with 1079 injector in following condition:
injector : 18o C, detector : 300 C
column : 80 C, isothermal
Carrier : 1,5 mL/min. make-up : 25 mL/min.
liner without glass wool
I make split injection (1:20, 1uL) and splitless injections.
The area of chloroform peak is varing 160000 to 230000. I can't make calibration.
Please tell me : what's wrong ?
Thank you
IOAN


Top of pagePrevious messageNext messageBottom of pageLink to this message  By B.Buglio on Wednesday, September 12, 2001 - 06:49 pm:

Have you tried the old standby- changing the
septum?


Top of pagePrevious messageNext messageBottom of pageLink to this message  By abed abdel qader on Thursday, December 20, 2001 - 01:42 am:

Im used VARIAN 3800 but the basline was very high
Please tell me: whats wrong?
THANK YOU
ABED


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